Sender address rejected: Domain not found

mailcow85

Hi,
I am getting the below for this domain. The bcamyview.com is not a valid domain so the error is correct. How can I whitelist either the domain or IP address for the senders domain. So far I have “fixed” it by adding the IP as a trusted network which is obviosuly not ideal but fine in the short term.

NOQUEUE: reject: RCPT from dcmailrelay.zellis.com[152.114.220.10]: 450 4.1.8 donotreply@xxx.com: Sender address rejected: Domain not found; from=donotreply@bcamyview.com to=xxx@xxx.co.uk proto=ESMTP helo=<dcmailrelay.zellis.com>

Many Thanks in advance

mailcow85

Anyone have any ideas at all?

luchris

I am having this issue also. The email address does not have PTR, MX record. It is a dummy domain but it is routed from an IP which has all the PTR, MX, rDNS, DKIM records.

I have created a file /opt/mailcow-dockerized/data/conf/postfix/access_sender

The content is email.address.com OK

I postmap it by

docker compose exec postfix-mailcow postmap /opt/postfix/conf/access_sender

Then restarted it

docker compose restart postfix-mailcow

Not working for me.

I did tried using another box, with postfix running without mailcow, no issue.

Any suggestion?

luchris

Resolved. Please ignore